Friday 20 May 2016

Scientist collects 30 sawfly species not previously reported from Arkansas


May 16, 2016

Sawflies and wood wasps form a group of insects that feed mainly on plants when immature. Field work by Dr. Michael Skvarla, which was conducted during his Ph.D. research at the University of Arkansas, Fayetteville, USA, has uncovered 30 species of these plant-feeding wasps that were previously unknown in the state. The study is published it in the open access journal Biodiversity Data Journal.

After collecting sawflies in tent-like Malaise traps or hanging funnel traps, Dr. Michael Skvarla sent the specimens to retired sawfly expert Dr. David Smith for identification.

In total, 47 species were collected, 30 of which had not been found in Arkansas before. While many of the species are widespread in eastern North America, eight species were known only from areas hundreds of kilometers away.

"I knew that many insect groups had not yet been surveyed in Arkansas, but I was surprised that 66% of the sawfly species we found were new to the state," Skvarla says.

"In addition, over a quarter of the newly recorded species represent large range extensions of hundreds of miles; Monophadnoides conspiculatus, for instance, was previously known only from the Appalachian Mountains. This work highlights how much basic natural history is left to discover about insects."


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